// Copyright 2019 The Vearch Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.

package formatdata

import (
	"errors"

	"google.golang.org/grpc"
)

var (
	client FormatDataClient = nil
	inited bool
)

func InitFormatDataClient(target string) error {
	if inited {
		return errors.New("client already inited")
	}
	c, err := grpc.Dial(target)
	if err != nil {
		return err
	}
	client = NewFormatDataClient(c)
	inited = true
	return nil
}

func GetFormatDataClient() (FormatDataClient, error) {
	if inited || client == nil {
		return client, nil
	}
	return nil, errors.New("client not inited")
}
